nouveau_context.c revision 4a7e9b5df453055ed6eedce1ea5c1d4a2f810fa7 
1/*
2 * Copyright (C) 2009-2010 Francisco Jerez.
3 * All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining
6 * a copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial
15 * portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 */
26
27#include "nouveau_driver.h"
28#include "nouveau_context.h"
29#include "nouveau_bufferobj.h"
30#include "nouveau_fbo.h"
31
32#include "main/dd.h"
33#include "main/framebuffer.h"
34#include "main/light.h"
35#include "main/state.h"
36#include "drivers/common/meta.h"
37#include "drivers/common/driverfuncs.h"
38#include "swrast/swrast.h"
39#include "swrast/s_context.h"
40#include "vbo/vbo.h"
41#include "tnl/tnl.h"
42#include "tnl/t_context.h"
43
44#define need_GL_EXT_framebuffer_object
45#define need_GL_EXT_fog_coord
46
47#include "main/remap_helper.h"
48
49static const struct dri_extension nouveau_extensions[] = {
50	{ "GL_EXT_framebuffer_object",  GL_EXT_framebuffer_object_functions },
51	{ "GL_ARB_multitexture",	NULL },
52	{ "GL_EXT_texture_lod_bias",	NULL },
53	{ "GL_SGIS_generate_mipmap",	NULL },
54	{ "GL_ARB_texture_env_combine",	NULL },
55	{ "GL_ARB_texture_env_dot3",	NULL },
56	{ "GL_ARB_texture_env_add",	NULL },
57	{ "GL_EXT_fog_coord",		GL_EXT_fog_coord_functions },
58	{ NULL,				NULL }
59};
60
61static void
62nouveau_channel_flush_notify(struct nouveau_channel *chan)
63{
64	struct nouveau_context *nctx = chan->user_private;
65	GLcontext *ctx = &nctx->base;
66
67	if (nctx->fallback < SWRAST && ctx->DrawBuffer)
68		nouveau_state_emit(&nctx->base);
69}
70
71GLboolean
72nouveau_context_create(const __GLcontextModes *visual, __DRIcontext *dri_ctx,
73		       void *share_ctx)
74{
75	__DRIscreen *dri_screen = dri_ctx->driScreenPriv;
76	struct nouveau_screen *screen = dri_screen->private;
77	struct nouveau_context *nctx;
78	GLcontext *ctx;
79
80	ctx = screen->driver->context_create(screen, visual, share_ctx);
81	if (!ctx)
82		return GL_FALSE;
83
84	nctx = to_nouveau_context(ctx);
85	nctx->dri_context = dri_ctx;
86	dri_ctx->driverPrivate = ctx;
87
88	return GL_TRUE;
89}
90
91GLboolean
92nouveau_context_init(GLcontext *ctx, struct nouveau_screen *screen,
93		     const GLvisual *visual, GLcontext *share_ctx)
94{
95	struct nouveau_context *nctx = to_nouveau_context(ctx);
96	struct dd_function_table functions;
97	int ret;
98
99	nctx->screen = screen;
100	nctx->fallback = HWTNL;
101
102	/* Initialize the function pointers. */
103	_mesa_init_driver_functions(&functions);
104	nouveau_driver_functions_init(&functions);
105	nouveau_bufferobj_functions_init(&functions);
106	nouveau_texture_functions_init(&functions);
107	nouveau_fbo_functions_init(&functions);
108
109	/* Initialize the mesa context. */
110	_mesa_initialize_context(ctx, visual, share_ctx, &functions, NULL);
111
112	nouveau_state_init(ctx);
113	nouveau_bo_state_init(ctx);
114	_mesa_meta_init(ctx);
115	_swrast_CreateContext(ctx);
116	_vbo_CreateContext(ctx);
117	_tnl_CreateContext(ctx);
118	nouveau_span_functions_init(ctx);
119	_mesa_allow_light_in_model(ctx, GL_FALSE);
120
121	/* Allocate a hardware channel. */
122	ret = nouveau_channel_alloc(context_dev(ctx), 0xbeef0201, 0xbeef0202,
123				    &nctx->hw.chan);
124	if (ret) {
125		nouveau_error("Error initializing the FIFO.\n");
126		return GL_FALSE;
127	}
128
129	nctx->hw.chan->flush_notify = nouveau_channel_flush_notify;
130	nctx->hw.chan->user_private = nctx;
131
132	/* Enable any supported extensions. */
133	driInitExtensions(ctx, nouveau_extensions, GL_TRUE);
134
135	return GL_TRUE;
136}
137
138void
139nouveau_context_deinit(GLcontext *ctx)
140{
141	struct nouveau_context *nctx = to_nouveau_context(ctx);
142
143	if (TNL_CONTEXT(ctx))
144		_tnl_DestroyContext(ctx);
145
146	if (vbo_context(ctx))
147		_vbo_DestroyContext(ctx);
148
149	if (SWRAST_CONTEXT(ctx))
150		_swrast_DestroyContext(ctx);
151
152	if (ctx->Meta)
153		_mesa_meta_free(ctx);
154
155	if (nctx->hw.chan)
156		nouveau_channel_free(&nctx->hw.chan);
157
158	nouveau_bo_state_destroy(ctx);
159	_mesa_free_context_data(ctx);
160}
161
162void
163nouveau_context_destroy(__DRIcontext *dri_ctx)
164{
165	struct nouveau_context *nctx = dri_ctx->driverPrivate;
166	GLcontext *ctx = &nctx->base;
167
168	context_drv(ctx)->context_destroy(ctx);
169}
170
171void
172nouveau_update_renderbuffers(__DRIcontext *dri_ctx, __DRIdrawable *draw)
173{
174	GLcontext *ctx = dri_ctx->driverPrivate;
175	__DRIscreen *screen = dri_ctx->driScreenPriv;
176	struct gl_framebuffer *fb = draw->driverPrivate;
177	unsigned int attachments[10];
178	__DRIbuffer *buffers = NULL;
179	int i = 0, count, ret;
180
181	if (draw->lastStamp == *draw->pStamp)
182		return;
183	draw->lastStamp = *draw->pStamp;
184
185	attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
186	if (fb->Visual.doubleBufferMode)
187		attachments[i++] = __DRI_BUFFER_BACK_LEFT;
188	if (fb->Visual.haveDepthBuffer && fb->Visual.haveStencilBuffer)
189		attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
190	else if (fb->Visual.haveDepthBuffer)
191		attachments[i++] = __DRI_BUFFER_DEPTH;
192	else if (fb->Visual.haveStencilBuffer)
193		attachments[i++] = __DRI_BUFFER_STENCIL;
194
195	buffers = (*screen->dri2.loader->getBuffers)(draw, &draw->w, &draw->h,
196						     attachments, i, &count,
197						     draw->loaderPrivate);
198	if (buffers == NULL)
199		return;
200
201	for (i = 0; i < count; i++) {
202		struct gl_renderbuffer *rb;
203		struct nouveau_surface *s;
204		uint32_t old_handle;
205		int index;
206
207		switch (buffers[i].attachment) {
208		case __DRI_BUFFER_FRONT_LEFT:
209		case __DRI_BUFFER_FAKE_FRONT_LEFT:
210			index = BUFFER_FRONT_LEFT;
211			break;
212		case __DRI_BUFFER_BACK_LEFT:
213			index = BUFFER_BACK_LEFT;
214			break;
215		case __DRI_BUFFER_DEPTH:
216		case __DRI_BUFFER_DEPTH_STENCIL:
217			index = BUFFER_DEPTH;
218			break;
219		case __DRI_BUFFER_STENCIL:
220			index = BUFFER_STENCIL;
221			break;
222		default:
223			assert(0);
224		}
225
226		rb = fb->Attachment[index].Renderbuffer;
227		s = &to_nouveau_renderbuffer(rb)->surface;
228
229		s->width = draw->w;
230		s->height = draw->h;
231		s->pitch = buffers[i].pitch;
232		s->cpp = buffers[i].cpp;
233
234		/* Don't bother to reopen the bo if it happens to be
235		 * the same. */
236		if (s->bo) {
237			ret = nouveau_bo_handle_get(s->bo, &old_handle);
238			assert(!ret);
239		}
240
241		if (!s->bo || old_handle != buffers[i].name) {
242			nouveau_bo_ref(NULL, &s->bo);
243			ret = nouveau_bo_handle_ref(context_dev(ctx),
244						    buffers[i].name, &s->bo);
245			assert(!ret);
246		}
247	}
248
249	_mesa_resize_framebuffer(NULL, fb, draw->w, draw->h);
250}
251
252static void
253update_framebuffer(__DRIcontext *dri_ctx, __DRIdrawable *draw,
254		   int *stamp)
255{
256	GLcontext *ctx = dri_ctx->driverPrivate;
257	struct gl_framebuffer *fb = draw->driverPrivate;
258
259	*stamp = *draw->pStamp;
260
261	nouveau_update_renderbuffers(dri_ctx, draw);
262	_mesa_resize_framebuffer(ctx, fb, draw->w, draw->h);
263
264	context_dirty(ctx, FRAMEBUFFER);
265}
266
267GLboolean
268nouveau_context_make_current(__DRIcontext *dri_ctx, __DRIdrawable *dri_draw,
269			     __DRIdrawable *dri_read)
270{
271	if (dri_ctx) {
272		struct nouveau_context *nctx = dri_ctx->driverPrivate;
273		GLcontext *ctx = &nctx->base;
274
275		/* Ask the X server for new renderbuffers. */
276		if (dri_draw->driverPrivate != ctx->WinSysDrawBuffer)
277			update_framebuffer(dri_ctx, dri_draw,
278					   &dri_ctx->dri2.draw_stamp);
279
280		if (dri_draw != dri_read &&
281		    dri_read->driverPrivate != ctx->WinSysReadBuffer)
282			update_framebuffer(dri_ctx, dri_read,
283					   &dri_ctx->dri2.read_stamp);
284
285		/* Pass it down to mesa. */
286		_mesa_make_current(ctx, dri_draw->driverPrivate,
287				   dri_read->driverPrivate);
288		_mesa_update_state(ctx);
289
290		FIRE_RING(context_chan(ctx));
291
292	} else {
293		_mesa_make_current(NULL, NULL, NULL);
294	}
295
296	return GL_TRUE;
297}
298
299GLboolean
300nouveau_context_unbind(__DRIcontext *dri_ctx)
301{
302	return GL_TRUE;
303}
304
305void
306nouveau_fallback(GLcontext *ctx, enum nouveau_fallback mode)
307{
308	struct nouveau_context *nctx = to_nouveau_context(ctx);
309
310	nctx->fallback = MAX2(HWTNL, mode);
311
312	if (mode < SWRAST)
313		nouveau_state_emit(ctx);
314	else
315		FIRE_RING(context_chan(ctx));
316}
317
318void
319nouveau_validate_framebuffer(GLcontext *ctx)
320{
321	__DRIcontext *dri_ctx = to_nouveau_context(ctx)->dri_context;
322	__DRIdrawable *dri_draw = dri_ctx->driDrawablePriv;
323	__DRIdrawable *dri_read = dri_ctx->driReadablePriv;
324
325	if (ctx->DrawBuffer->Name == 0 &&
326	    dri_ctx->dri2.draw_stamp != *dri_draw->pStamp)
327		update_framebuffer(dri_ctx, dri_draw,
328				   &dri_ctx->dri2.draw_stamp);
329
330	if (ctx->ReadBuffer->Name == 0 && dri_draw != dri_read &&
331	    dri_ctx->dri2.read_stamp != *dri_read->pStamp)
332		update_framebuffer(dri_ctx, dri_read,
333				   &dri_ctx->dri2.read_stamp);
334
335	if (nouveau_next_dirty_state(ctx) >= 0)
336		FIRE_RING(context_chan(ctx));
337}
338